Polish readme and goreleaser content

Author: aalmiray

.goreleaser.yml

@@ -53,7 +53,8 @@ snapcrafts:
     description: |
       Gum is a Gradle/Maven/jbang wrapper written in Go, inspired in https://github.com/dougborg/gdub and https://github.com/srs/gw.
       Gum automatically detects if the project is Gradle, Maven, or jbang based and runs the appropriate command. However in the case
-      that Gum guesses wrong you can force a specific build tool to be used.
+      that Gum guesses wrong you can force a specific build tool to be used. Similarly as gdub, Gum lets you invoke either Gradle or 
+      Maven from anywhere within the project structure, not just the root directory.
 
       **Usage**
 

README.adoc

@@ -68,15 +68,15 @@ Gum can be used to run Maven and Gradle builds like so:
 $ gm build
 ----
 
-Which results in the invocation of either *mvnw* or *mvn* with the *verify* goal.
+Which results in the invocation of either *mvnw* or *mvn* with the *verify* goal as *build* gets replaced by *verify*.
 
 .Gradle
 [source]
 ----
 $ gm verify
 ----
 
-Which results in the invocation of either *gradlew* or *gradle* with the *build* goal.
+Which results in the invocation of either *gradlew* or *gradle* with the *build* goal as *verify* gets replaced with *build*.
 
 .jbang
 
@@ -135,6 +135,8 @@ Use the kordamp/homebrew-tap
 $ brew install kordamp/tap/gum
 ----
 
+Or use the `upgrade` or `reinstall` commands if you had a previous installation of Gum in your system.
+
 === Snapcraft
 
 [source]